Adjusting device.



PATENTE'D SEPT. 15, 1903 L. MYERS; ADJUSTING DEVICE.

APPLICATION FILED HA3. 4, 1903v *flirr. J...

WITNESSES:

INVENTOR Iawis Jf ers ATTORNEYS Tu: Nunms warms cc. PNUTO-LITHOY,WASHINGTON D. c.

Qv/Mua WM Patented September 15, 1903.

, PATENT OFFICE.

LOUIS MYERS, OF HARTFORD, CONNECTICUT, ASSIGNOR TO UNDERVVOOD TYPEWRITERCOMPANY, NEW JERSEY.

OF NEWV YORK, N. Y., A CORPORATION OF ADJUSTING DEVICE.

SPECIFICATION forming part of Letters Patent N 0. 738,928, datedSeptember 15, 1903.

Application filed March 4,1903. Serial No. 146,043. (No model.)

To all whom it may concern.-

Be it known that I, LOUIS MYERS, a citizen of the United States,residing in Hartford, Hartford county, Connecticut, have inventedcertain new and useful Improvements in Adjusting Devices, of which thefollowing is a specification.

My invention relates to devices which require adjustment to diiferentpositions, and is particularly applicable to the adjustable stops thatare used on type-writers to arrest the carriage at predetermined points,as well as to other attachments it may be desired to adjust lengthwiseof the type-writer carriage or its path.

The invention will be fully described hereinafter and the features ofnovelty pointed out in the appended claims.

Reference is to be had to the accompanying drawings, in which- Figure lis a face view of a rack and an adjustable member thereon constructed inaccordance with myinvention. Fig. 2 is a longitudinal section on line 22 of Fig. 1, and- Fig. 3 is a cross-section on line 3 3 of Fig. 2.

A indicates a rack having teeth A, and B is the slide or memberadjustable lengthwise of the rack. This member is preferably made of asingle piece of metal bent to the shape of a rectangular prismatic boxopen at both ends, the width of said box being such that its side wallsB snugly fit the sides of the rack, while the distance between the topwall B and the bottom wall B are somewhat greater than the height orthickness of the rack from the faces of its teeth to its bottom surface.A space is thus left betweenthe rack and the bottom B which space servesto receive a spring C, connected with the slide and engaging the rack,so as to have a tendency to force the slide downward.

The material of the top wall 13 is removed, as by sawing, at intervalswhich correspond to the distance between the teeth A of the rack, andthe width and depth of the notches B thus produced are sufficient toreceive the rack-teeth A, so that normally the upper surface of theslide will lie' flush with the outer or free end faces of therack-teeth, as shown in Figs. 2 and 3.

It will be understood that the spring C will normally force the teeth Ainto the notches of the slide. When, however, it is desired to adjustthe slide to adi fierent position, the

bottom of the slide is pressed upward-that is, toward the rackthusbringing the open top wall of the rack clear of the rack-teeth A andallowing the slide to be shifted along the rack in either direction.When the upward pressure is discontinued and the spaced bars B whichconstitute the top wall of the slide, are allowed to snap into thenotches of the rack A, the slide will become locked in its adjustedposition.

The slide hereinbefore described may form part of a stop for atype-writer carriage, and in Figs. 1 and 3 I have indicated a stopmemher 13 projected from one end of the slide B, with a flange orbrace-l3 arranged between the said stop member and one of the side WallsB. The slide, stop member, and brace are shown constructed of a singlepiece of metal.

The advantages of my invention are its great simplicity of structure andmanufacture, as the entire device which is fitted on the rack can bemade by stamping and bending, followed by sawing the notches B, thespring C being attached previously. This spring might be formed bystriking a tongue of metal out of the bottom B The device,notwithstanding its great simplicity, is very eflicient, strong, .andneat and locked against movement in either direction when a rack withrectangular teeth is used. The fact that the top B lies flush with therack-teeth not only improves the appearance of the device, but preventsthe accumulation of dirt and the accidental disengagement of the slidefrom the rack.

In the foregoing description and in the appended claims I have for thesake of convenience referred to certain parts as the top and the bottomof the slide. The device, however, will work in any position, and theterms top, bottom, and the like are not to be given any restrictiveinterpretation.

What I claim as new, and desire to secure by Letters Patent, is-

' 1. In combination with a rack, a slide adjustable thereon lengthwiseand comprising a box arranged to surround the rack and 'provided in thewall which faces the rack-teeth,

justable thereon lengthwise and also movable transversely of the rack,said slide comprising a box the top wall of which is cut away or notchedto receive the teeth of the rack, leaving spaced bars which extend fromone side wall of the slide to the other and are adapted to fit into thenotches between the rack-teeth, said slide being provided with a springengaging the bottom surface of the rack, to normally keep the slide inlooking engagement with the rack.

3. In combination with a rack, a slide adjustable thereon and alsomovable transversely of the rack, said slide comprising a box open atboth ends and embracing the rack with sulficient play to allow of saidtransverse movement, and provided with a .spring engaging the rack onthe face opposite to its teeth, the wall of the box adjacent to therack-teeth having cross-bars adapted to fit between the rack-teeth andseparated by notches adapted to receive said teeth.

In testimony whereof I have hereunto subscribed my name in the presenceof two subscribing witnesses.

LOUIS MYERS. Witnesses:

JOHN LOTKA, OTTO v. SCHRENK.

